Search for CP violation in Lambda(0)(b)-> pK(- )and Lambda(0)(b) -> p pi(-) decays

Olivier Schneider, Guido Haefeli, Tatsuya Nakada, Yasmine Sara Amhis, Michel De Cian, Federico Leo Redi, Vladimir Macko, Pietro Marino, Tara Nanut, Violaine Bellée, Pavol Stefko, Alessio Ferrari, Guillaume Max Pietrzyk, Luca Pescatore, Preema Rennee Pais, Guido Andreassi, François Fleuret, Maxime Schubiger, Chitsanu Khurewathanakul, Christoph Frei, Greig Alan Cowan, Vladislav Balagura, Ian William Marison, Jessica Prisciandaro, Mark Tobin, Mirco Dorigo, Sebastiana Gianì, Conor Thomas Fitzpatrick, Arnaud Merlin Gauthey, Matthieu Philippe Luther Marinangeli, Tommaso Colombo, Marco Calvi, Daniel Gallichan, Mai Tu Xuan, Marilisa Neri, Jared Heath Delcamp, Severin Stähly, Michael Thompson McCann, Simon Van Mulders, Vincenzo Battista, Giovanni Veneziano, Matteo Fontana, Benedikt Sebastian Braun, Alexandra Bondarenko, Brice Emile Maurin, Nathalie Sophie Adeline Serra, Léonard Yannick Maurice Eymann, Adriano Pastore, Valérie Jeanne Thérèse Renaudin-Schouler, Luc Henry, Xiao Yuan, Laia Castilla Amorós, Craig Matthew Smith, Basile Schäli, Juan Federico Esteban Müller, Nandita Aggarwal, Sattar Akbari Nakhjavani, Gang Yu, Thomas Jean Julien Fussinger
2018
Journal Articles

Abstract

A search for CP violation in Lambda(0)(b)-> pK(- )and Lambda(0)(b) -> p pi(-) decays is presented using a sample of pp collisions collected with the LHCb detector and corresponding to an integrated luminosity of 3.0fb(-1). The CP-violating asymmetries are measured to be A(CP)(pK- )( = -0.020 +/- 0.013 +/- 0.019 and A(CP)(p pi-) = -0.035 +/- 0.017 +/- 0.020, and their difference A(CP)(pK-) - A(CP)(p pi-) = 0.014 +/- 0.022 +/- 0.010, where the first uncertainties are statistical and the second systematic. These are the most precise measurements of such asymmetries to date. (C) 2018 The Author(s). Published by Elsevier B.V.

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Search for CP violation in Lambda(0)(b)-> pK(- )and Lambda(0)(b) -> p pi(-) decays

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